ASTROSAT CZTI

Data Quality Report

Orbit 11558

Creation date: 2024-06-27T16:14:51.650096
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_009T01_9000001696_11558cztM0_level2.evt modeM0/AS1G08_009T01_9000001696_11558cztM0_level2_quad_clean.evt
Size (bytes)1,093,544,640149,281,920
Size1.0 GB 142.4 MB
Events in quadrant A9,692,358890,040
Events in quadrant B8,440,608910,406
Events in quadrant C5,907,783929,347
Events in quadrant D8,180,594873,297

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02720
B02720
C02720
D02720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376944
B0338793
C0269903
D0333723

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132788146.130441%
B132785033.788221%
C13278660.497063%
D132784013.020033%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 14935 13283 447 447 2.99% 3.37%
B 14935 13283 225 225 1.51% 1.69%
C 14935 13283 0 0 0.00% 0.00%
D 14935 13283 242 242 1.62% 1.82%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 5 3134418 10179.42 1519 1485 307.8
A 1 162 245092 791.52 1519 1485 307.8
A 1 178 148633 478.11 1519 1485 307.8
B 4 239 1398500 4722.41 1547 1507 295.8
B 15 204 671278 2264.1 1547 1507 295.8
B 11 51 227751 764.8 1547 1507 295.8
C 13 61 10960 26.69 1514 1518 353.7
C 12 4 5567 11.45 1514 1518 353.7
C 3 202 3712 6.2 1514 1518 353.7
D 1 52 1367457 3773.31 1495 1452 362.0
D 13 137 368958 1015.16 1495 1452 362.0
D 2 120 152186 416.37 1495 1452 362.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter